Salient Imagenet

Class: 344 (Hippopotamus), Feature: 285

This feature is core for class Hippopotamus. It is the most important feature for class Hippopotamus.

Below, we display the five Hippopotamus images that most highly activate the feature, along with the Neural Activation Map (heatmap) and Feature Attack for each image. These are the same as the images shown to crowdworkers to annotate this class-feature pair.

We additionally provide the full responses of the five crowdworkers that annotated this pair, as well as links to other related pairs (i.e. same class or same feature).

MTurk Worker Annotations

core

spurious

core

spurious

Main Focus	Confidence	Explanation
Background	3	Focus is on the back
Main Object	2	The focus is mostly on the hippo in some of the photos and mostly on the background on others
Main Object	4	Images 1, 3, 4 and 5 the focus of the red regions are clerly on the main object (hippopotamus). the second picture has no main object present, and the red region overlaps with the only object other than the background (alligator).
Main Object	3	Red focus is on the water animal.
Background	5	Most of the images are mainly focused on background only.

core

Related Class-Feature Pairs

Important Features for Hippopotamus

There are 4 features annotated as core and 1 features annotated as spurious for Hippopotamus. Core features include 285, 535, 960, 980. Spurious features include 925.

Classes where Feature 285 is among Most Important (i.e. top-5)

Feature 285 is core for the following classes: Komodo Dragon, Nile Crocodile, American Alligator, Mongoose, Wild Boar, Hippopotamus, Otter.
Feature 285 is spurious for the following classes: Mink.